Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyester composition, and preparation method thereof

A technology of composition and polyester, which is applied in the field of polymers to achieve the effect of improving toughness and good industrial application prospects

Pending Publication Date: 2018-05-01
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although there are many copolymers containing PBT structure at present, due to various reasons, such as material performance and cost control, there is no modified material that blends PBT and corresponding copolymers on the market.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyester composition, and preparation method thereof
  • Polyester composition, and preparation method thereof
  • Polyester composition, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] In the present invention, the aliphatic-aromatic copolyester can be at least one of random copolymers, alternating copolymers, block copolymers and graft copolymers, preferably random copolymers and / or block copolymers. In the present invention, the source of the aliphatic-aromatic copolyester is not particularly limited, and it can be obtained by conventional means in the field, for example, it can be obtained commercially, or it can be prepared according to the method disclosed in CN100429256C. Specifically, the preparation method of the aliphatic-aromatic copolyester may include the following steps: adding 1,4-butanediol, dimethyl benzoate and a catalyst as described in US11312373 to the reactor, Heat and stir under atmosphere until a clear solution is obtained. Subsequently, the temperature was raised to 160-220°C for reaction. When most of the distilled methanol in the system is removed, add succinic acid and raise the temperature to 180-240°C. Distill off most ...

Embodiment 1

[0048] This example is used to illustrate the polyester composition provided by the present invention and its preparation method.

[0049] With 180g polybutylene terephthalate (purchased from DuPont Company, trade mark is Crastin SC164NC010, the same below), 20g butylene terephthalate-butylene succinate copolyester (weight average molecular weight is 100,000 , wherein, taking the total molar number of succinate butylene glycol repeating unit and terephthalate butylene glycol repeating unit as a basis, the content of terephthalate butylene glycol repeating unit 80 mol%) and 2g calcium carbonate are stirring Mixing under the condition of mixing, the stirring rate is 10rpm, and the time is 10min. The obtained mixture is extruded and granulated by a twin-screw extruder, the screw speed is controlled to be 10rpm, the screw torque is 20N*m, and the temperature of each section from the feed port to the extrusion port in the twin-screw extruder is 240 °C, 250°C, 260°C, 260°C, 265°C, ...

Embodiment 2

[0059] This example is used to illustrate the polyester composition provided by the present invention and its preparation method.

[0060] With 180g polybutylene terephthalate (purchased from DuPont, trade mark is Crastin SC164NC010), 20g butylene terephthalate-butylene succinate copolyester (weight-average molecular weight is 100,000, wherein, Taking the total molar number of butanediol succinate repeating unit and butanediol terephthalate repeating unit as a benchmark, the content of butanediol terephthalate repeating unit is 60 mole %) and 2g calcium carbonate under the condition of stirring Mixing, stirring at a rate of 10 rpm for 10 min. The obtained mixture is extruded and granulated by a twin-screw extruder, the screw speed is controlled to be 10rpm, the screw torque is 20N*m, and the temperature of each section from the feed port to the extrusion port in the twin-screw extruder is 240 °C, 250°C, 260°C, 260°C, 265°C, 260°C to prepare polyester composition A2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention relates to a polyester composition and a preparation method thereof. The polyester composition comprises polybutylene telephthalate and aliphatic-aromatic copolyester, wherein on the basis of the total weight of polybutylene telephthalate and aliphatic-aromatic copolyester, the contents of polybutylene telephthalate and aliphatic-aromatic copolyester are 50-99 wt% and 1-50 wt%, respectively. The invention also provides the preparation method for the polyester composition. The preparation method comprises the following steps: mixing polybutylene telephthalate with aliphatic-aromatic copolyester; and subjecting a mixture obtained in the previous step to extrusion granulation so as to obtain the polyester composition. The polyester composition provided by the invention has highelongation at break of 230% or above and obviously improved toughness without great loss in strength.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a polyester composition, a method for preparing the polyester composition, and a polyester composition prepared by the method. Background technique [0002] Polybutylene terephthalate (PBT) is one of the five major engineering plastics. It was first synthesized by German scientist P. Schlack in 1942, and then industrially developed by the American Celanese company (now Ticona company) and traded under the trade name Celanex goes public. PBT has the characteristics of good dimensional stability, high temperature resistance, excellent flame retardancy and insulation properties, good fluidity, small linear thermal expansion coefficient, excellent chemical solvent resistance, etc. It has a very wide range of applications in the electronic and electrical industries, automobile industry and office machinery . When the impact resistance of PBT is poor, and it is especially sensitive to defects...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08K3/26B29C47/92B29C48/92
CPCB29C48/92C08L67/02B29C2948/92704C08L2205/03C08L2205/025C08L2207/066C08K2003/265C08L23/06C08K3/26B29C48/40B29K2067/006C08G63/183C08G63/80C08K5/0083C08K5/053C08L77/00C08L2205/24
Inventor 郑萃祝桂香刘立志张伟
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com